Apparatus for sizing and quenching cups and cones



M. T. LOTHROP.

Feb. 6, 1923' APPARATUS FOR SIZING AND-QUENCHING CUPS AND CONES.

3 SHEETS-SHEET l.

FILED MAR. 22, 1920.

Feb; 1923. 11,444,258,

M. T. LOTHROP.

APPARATUS FOR SIZING AND QUEN CHING CUPS AND.CONES.

FILED MAR 22, 1920. 3 SHEETSSHEET 2.

Feb. 6,1923.

' M. T. LOTHROP.

APPARATUS FOR SIZING AND QUENCHING CUPS AND CONES.

3 SHEETS SHE ET 3.

HLED MAR. 22, I920.

I grinding the bearing surface.

mg operation;

s MARCUS T. LOTHROP, OF

'Patented Feb. 6, 11923.

BEARING COMPANY, OF CANTON,

OHIO,

ASSIGNOR TO THE TIMKEN ROLLER OHIO, A CORPORATION OF OHIO.

APPARATUS FOR SIZING AND QUENCHING CUPS AND COMES.

Application filed March 22,

of which the following is a specification.

My lnvention relates to devices and proand quenching cups and withoperation of It consistsprincipally in means hereinafter described forpreventing distortion during the quenchit also consists in supportconeduring the quenching v maintain the proper concentricity thereof; italsoconsists in means for insuring the desired size and taper of the cup;and it also consists in t e process and in the parts and combinationsand arrangements of parts hereinafter described and claimed.

In the accompanying drawing wherein like numerals refer to like partswherever they occur,

Fig. l is an end elevation of a sizing and quenching machine embodyingmy invention;.

Fig. 2 is a front elevation of the machine;

Fig. 3 is an enlarged vertical section through the quenching and cupexpanding device, one of the expanding plugs being shown in itslowermost position and in engagement with a cup and the other of saidplugs being shown in its uppermost position and after-a cup has beenstripped therefrom;

ig. 4: is a vertical section on the line 4-4 in Fig. 1, showing themechanism for operating the clutch and the mechanism forlocking the camshaft;

Fig. 5 is a fragmentary end View of the 1 parts shown in Fig.4;

Fig. 6 is an enlarged vertical section taken through the lower endportion of one of the expanding-plugs; and 'Fig. 7 is a view of theplug. The cup of a conical roller bearing is a lower end of the hollowring or shell whose inner surface is 1920. Serial No; semen outersurface may be either conical or cylin- 1s concentric with the innersur-' usual process of manufacturing..: these cups calls for carefulmachining, whlch they aresubmitted to the heat tre'atdrical butnecessitates grinding" of the bearing surface, followed by a burnishing.The grinding operation only expensive but it is injurious to the is notprodor less of the hardened shell thereof. Besides, much of the 'productis distorted beyond redemption or 15 so inaccurate as to diameter ortaper that it has to be scrapped.

umerous efforts have been made to overcome the tendency to as I know,the proposed devices have been quite inefficient for the purpose.

he sizing and quenching machine shown in the drawings comprise a table 1supported on suitable standards 2.

g to my invention, made and handled in the usual way until the close ofthe heat treatment exceptthat it is bore of slightly less diameter thanis required for the finished cup. The hotvcups 9, as they; come areplaced on a circular supportin plate 10 Which is located b j in acentral circuholder and the tabe 1 are all provided ishing operationsuch as 65 the cup is from the furnace,

spacing 1L check 17 the purpose of which will hereinsupply pipe holders.

upwardly in axial opened and closed by means of arranged in the pipes19'. These valve rods with central vertical openings which are disposedin axial alinement.v

The quenching liquid is conducted to the cup holders from a main'supplypipe 13 provided with a control valve 14. The supply pipe 13 hasoppositely extending horizontal branches15 whose outer ends extendalinementwith the central openings in the cup holders 4;. The upper endof each branch pipe 15 is provided with a valve 16 provided with aballafter be described. Communication is established between therespective valves 16 by means of a horizontally disposed pipe 18.Communication is established between the cup holders 4 and theirrespective branch pipes 15 by means of vertically disposed. pipes 19.The pipes'19 extend through the alined openings in the table 1 andspacing blocks 12 and are threaded into the central openings in thebottom plates 7 of the holders, their upper ends terminating flush withthe upper surface of the bottom plates. The lower ends of the pipes 19are threaded in the upper ends of the valves 16, thus establishingcommunication between the main 13 and each of the holders. A nut 20 isthreaded on the lower end of each ofthe pipes 19 and bears against thebottomsurface of the table to hold the pipes in position.

The intermediate plates 6 of the holders are provided with a series ofradially spaced horizontally disposed ports 21 whose inner endscommunicate with the upper ends of the pipes 19 and whose outer endscommunicate with a circular series ofivertical ports 22, which areformed by in the intermediate plates 6 and the annular top plates5 ofthe holders. The flow of the quenching liquid from the-ports 21 and 22into the central openings in the annular top plates 5 of the holders isaccomplishedby means of a series of horizontally disposed jet openings23, which lead from. the vertical ports 22 to the central openings in.the

The valves 16 in the branch pipes 15 are valve rods 24 are arranged forvertical movement in the pipes'19 and provided with oppositelyprojecting pins or lugs 25, which engage the inner walls of the pipes 19and thus center the valve rods therein. The lower ends of the valve rodsare provided with beveled head portions 26 which seat againstbeveledvalve seats formed in the valves 16. The beveled heads of the valve rodsare normally retained against the valve seats by the pressure of thequenching liquid on the under sides of the head portions of the valverods, thus stopping the flow of the quenching liquid from the mainsupply pipe to the cup cups.

' tions.

being provided with oppositely drain pipe 28 extends upwardly throughthe table 1 and pan 3, its upper edge terminating flush with the bottomof said pan. The horizontal pipe 18 which connects the two valves 16 ofthe branch pipes 15, is also connected to the waste pipe 28 by means ofa pipe 29. The purpose of this connection will be hereinafter described.

The hot cups 9, after being placed on the plates 10 of the holders, areengaged by vertically movable tapered plugs 30, wh ch are with a locatedabove the holders in axial alinement therewith and are adapted-to expandsaid I lower ends of vertically movable slide rods 31 and have conicallower end portions 30 of the same taper as that desired for the innersurfaces of the finished cups. The slide in bearings 32 secured to thehorizontal member'o an open frame 33, which projects mounted on theupwardly from the table, and are alter-' nately actuated 1n a mannerhereinafter described. The expanding plugs have threaded upper endportions 34 which are screwed into the slide bars'31, and are providedwith These expanding plugs are adjustablyf rods 31 are slidably mountedlock-nuts 35 for locking them in the desired 0 posltions of adjustment.Accordngly, the j stroke of the plugs can be so adjusted or limited thatthe portion thereof of the size desired for thecup shall be in contactwith the cups atfthe lower limit of the stroke of each of said plugs.

Devices for stripping the cups from the tapered ends of the expandingplugs 30 when the plugs are intheir uppermost positions are mounted ontheir lower end por- These devices comprise cylindricalsleeves 36 whichare loosely sleeved on the lower ends of the plugs and are held threonby means of pins 37 These pins extend through horizontal holes in theexpanding plugs, fitting tightl therein. The opposite ends of the pins 3extend into elongated vertical slots 38 formed in the stripping sleeves36. The stripping sleeves have nuts the nuts disposed locking-them tothe stripper sleeves in any desired. position of adjust: ment. With thisarrangement, when the plugs reach their uppermost positions, theadjusting nuts 39 on the upper ends of the stripping sleeves 36 strikethe lower ends 39 threaded on their upper ends,

set-screws for of the bearings 32of the slide rods 31 and are heldstationary. whereupon, further inclined from the vertical.

movement of the plugs causes the cups to engage the stripper sleeves andbe forced ofl the tapered ends of the plugs.

The lower ends of the expandingplugs 30 have central bores which extendupwardly from their bottom faces and form cylindrical chambers '40therein. Studs 41 are threaded into the upper ends of the chambers 40,the studs belngof smaller diameter 'th than that of the chambers toleavea space between the studs and the walls of said chambers. The headvportions of the studs are adapted to engage the upper ends of thevalverods 24 for actuating the same and said studs are provided withlock-nuts 2 for clamping them in the desired adjuste position.

As illustrated in Fig. 6, the tapered surfaces 30 of the expanding plugs30 are fluted as at 43, the flutes being preferably The plugs areprovided with a series of horizontally disposed radially spaced ports44, which lead from the bottom of the flutes to the chambers 40 in thelowerends of said plugs. These chambers, in turn, communicate with thebranch pipes 15 through circular openings in the cup supporting plates10, and the intermediate plate 6 of thecup holders. Thus, with thisarrangement, whenone or the other of the plugs is forced axially into ahot cup, the taper of the inner surface of the cup is maintained orbecomes the same as the taper ofthe plug and the inside/die ameter ofthe cup will be increased more or less according is forced into the cup.The action of forcing the plugs into thecups causes the stud screws 41on their lower ends of the plugs to engage the upper ends of the valverods 24, thus forcing the engaged valve rods downwardly and forcingtheir taperedhead portions off the beveled valve seats in the valve 16.Thisopening of the' valves permits the quenching. liquid to flow fromthe branch pipes through the valves and "thence upwardly through thepipes 19 into the circular openings in the intermediate plate 6 of theholders. Part of the quenching liquid flows through the horizontal ports21 in the intermediate plate 6 in the holdr and enters the verticalports 22- which connect therewith, and openings 23 against the outersurface of the cup. Thellquid is also forced upwardly through thecentral opening in the interme- The-liquid is then forced throughthediate plate 6 and the central opening in the cup supporting plate 10into chamber 40 in th plug.

horizontal ports 44, which lead from the hollow chamber 40 of the plugto the bottom of the flutes 43' formed in the outer surface thereelower. end of the of,-and is directed against the inner surface carriedaway After the valves 16 to the distance the plug forces the ball-checks17 is forced through the jet the hollow 3 111g and straightenin of thecup. The annular flangell of each cup supporting plate 10 is providedwlth a,

series of vertical notches which perniit the quenching liquid to drainoff the cup supporting plate into the circular opening in the top of theholder. Whenithe expanding plugs are raised, the .cups cling to their.tapered ends and are stripped therefrom in the previously describedmanner. When e valves are opened, and the liquid is be ing directedagainst the inner and outer surfaces 'of the cup, the liquid whichaccumulates in the central opening in the holders drains into the pan 3through the series of drain openings 27' in the top members 5 of saidholders. The liquid in the pan is then by means of a waste pipe 28. Thisraising of-the plungers or plugs 30 also releases the valve rods 24 andthe pressure of the liquid on the lower ends-of the valve rods forcesthe beveled heads of the valve rods againsttheir tapered valve seats,thus closing the valves fiow of liquid to the quenching devices 4.quenching liquid standing in the cup holders and in the pipes horizontalpipe '18, which connects the valves andthence through the pipe 29 intothe waste pipe 28. The pressure of the waste water is so slight that theliquid passes around the ball-checks 17 without forcing the same againstits seat to close the pipe 18..- When the valves 16 are open, to permitthe liquid to enter the cup holders, the flow of liquid through thevalves against their seats,

have been closed, the

16 and stopping the I thus closing the pipe 18 and preventing flow drainpipe 28., It is noted t at the liquid supply system will operatesuccessfully without: the use of ball-checks but with a greater waste ofquenching liquid.

The slide bars'31, to which the expanding plugs 30 are secured, aresimultaneously raised and. lowered by means of a duplex toggle so thatone bar is in it's uppermost position and the other most position at theend This toggle comprises a 46 and a pair of lower cent ends of theupper and lower lirks of each toggle being. pivot a'lly securedtogether; and the lower ends of the lowermost links-are pivota-llyconnected with the upper ends of the slide I '0ds'31; The upper endsofthe upper links 46 of each toggleare pivotally secured to across-barof the frame 3 by means of anchor brackets 46. The upper and lower linksofeach toggle are connected at their point of means of a connecting link48; Power is applied to the points ofjunction for bendthe toggle linksby y. moving yoke. This of their movement. pair of upper links links 47,the adjameans of a horizontal of liquid from the supply pi e 13 into theI bar is in its lowerjunction by the yokes are slidably mounted inbearings site horizontal yoke comprises horizontally disposed spacedparallel slide rods 49 Whose opposite ends are connected by means ofvertically disposed cross-arms 50. The slide bars 49 of 51, which arebolted'or otherwisesecured to the open frame 33.

This yoke is alternately shifted in oppodirections by means of a cam 52which is fixed to the outer end of a horizontally disposed cam shaft 53.This camshaft 53 is journaled iin bearings 54: formed therefor in the.open frame. The cross-bar 50 of the, yoke located nearest the doubletoggle is connected to one end of a horizontally disposed slide bar 55which 55 secured to the side works in the bearing The other end of thisof the open frame.

slide bar is connected to the links of the nately sliding the nearesttoggle at their point of junction by means of a link 56. The cam 52 onthe cam shaft 53 is located between the cross-bars 50 0f the yoke. Eachof these cross-bars has a cam roller 57 journaled therein. One of thecam rollers is engaged by the peripheral edge of the cam plate 52 duringeach half revolution of the cam shaft, thus alteryoke' in two oppositehorizontaldirections during each revolution of the cam shaft- Thismovement of the yoke,

by reason ofits connection with the duplex in vertical alinementtherewith.

' toggle,

causes the toggle links to alternately bendand straighten and theexpanding plugs to be alternately raised and lowered. 'The, cam shaft 53is driven from a horizontally disposed drive shaft 58 journaled inbearings 59 secured to the table 1 of the machine. This drive shaft isprovided at its outer end with a has a drive pinion 61 secured thereto.Thisdrive pinion meshes with a gear 62 which is rotatably mounted on aparallel counter shaft 63 located-beneath the cam shaft 53 One end ofthis counter shaft is journaled in ja bearing. 64 secured to the tableand'its opposite 4 end portion is journaled in spacedupright drive shaft58, but no movement is imparted which action slides the clutch a sidemembers 33 of the open frame 33.

small gear 65 is keyed to the counter shaft 63 and is located betweenthe side members 33 of the frame. This gear meshes eonstantly with alarge gear 66 fixed to the cam. shaft 53. The large gear 62 of thecounter shaft is constantly driven by the drive pinion 61 on theconsta'ntlyrotating to .the counter shaft 63 by reason of the isprovided at one end with clutch jaws 67 7 adapted to be engaged bysmaller clutch jaws 68 formed on the .adjacent end of a I This clutchmember is splined on the counter shaft 63 to rotate with the same whenthe clutch is drive pulley 60 and thrown into engagement with theconstantly rotating gear 62. This forms a double reduction drive gearingfor the cam shaft.

The sliding clutch member 69 on the frame 33. This lock rod is locateddirectly above the sliding clutch 69 and is provided at its upper endwith a weight 72 which normally holds its lower end incontact with, thecylindrical surface of said clutch. The lower end of the lock rod 70 hasa cam roller 73 journaled thereon whose cylindrical surface is adaptedto be engaged by the adjacent beveled side edge of a cam lug 74. formedon the cylindrical surface of the clutch 69. The end of the clutch,adjacent to one of the upright members 33 0f the frame 33 is providedwith a series of cylindrical bores in which are mounted's'tuds 75. Theinner end portions of these studs are reduced and have springs 7 6'sleeved thereon, the opposite ends of said springs bearing against therespective inner ends of the bores and the shoulders formed by thereduced portions ofthe studs 75,. These studs bear against a hardenedcircular disk 77 located between the adjacent upright frame member 33and the adjacent end of the clutch 69. Thus, the studs mounted in theclutch member are pressed against the disk ment with the gear! 62 andcouple said clutch and said gear together. The clutch I is held out ofengagement" with the gear 62 by the lock rod 70, the cam lug 74 of theclutch bearing against the cam roller 73 on the lower end of said lockrod. When the lock rod 70 is lifted from its position in front of thecam lug 74, this action; permits the spring pressed studs 75 to forcethe clutch into engagement with the gear 62. This causes the cam lug 74to move into a v position beneath the lower end of the look A rod and,during the rotation of the, clutch,

the cam lug travels beyond'the lower end of the lock rod and thuspermits the lower end of the rod to engage the cylindrical surface ofthe clutch. Continued rotation of the clutch causes the cam lug torotate with the clutch and to be brought around into a position whichpermits its beveled edge to on the lock rod,

distance along the shaft to uncouple said clutch from the constantlyrotating gear 62. The clutch 69 is uncoupled from the rotating gear 62during every complete revolution thereof and is always stopped with itscam lug in position behind the lock rod 70 by means of a spring pressedstop pawl 78 and a stop disk 79. The stop disk 79 is engage the camroller rod 81.

latch rod to edge is provided with two oppositely disgosed notches 80which are spaced apart 180 egrees. The stop pawl 78 is pivoted to theframe 33 and is provided with a catch at one end which normally engagesone of the notches and prevents, rotation of the cam shaft in itsdirection of rotation. The notches 80 formed in the stop plate 79 areshaped-after the manner of ratchet teeth whereby when the latch endofthe pawl 78 is lifted outof one of the notches, the cam shaft ispermitted to rotate 180 degrees be fore it is again stopped by theaction ofthe pawl engaging the other notch when said f notchreaches aend of the pawl. v

The pawl 78 is withdrawn fromv engagement with the notches in the stopdisk to permit the cam shaft to rotate, and the stop position beneaththe latch rod 701's lifted 'from'its position in front t of the cam lug74 on the clutch 69 to mit the clutch tobe coupled with the 62, by meansof perg r a vertically disposed latch This latch rod is made intwot'ions, the upper section being connected to the pawl 78, upper andlower sections of the latch'rod have a slot arm of a horizontallydisposed yoke lever 82.

The opposite end of the yoke lever 82 is bifurcated to embrace the lockrod and is located beneath the weight 72 on the upper end of said lockrod. This yoke lever is fulcrumed on a pin mounted in spaced lugs 83which progect'upwardly from the bearing 71 in which the lock rod isslidably mounted. The adjacent ends of the upper and lower sections ofthe latch rod are secured togetherby means of a pin 84 which extendsthrough a slot 85 inthe adjacent end cf the yoke lever 82. Thus, whenthe latch rod is raised, the slot 85 permits the be raised and liftthepawl 78 out of the notches of the stop disk 79 before the yoke isactuated to lift the lock rod 70. The latch rod is normally held in itsupperto hold the clutch 69 in its uncoupled posi tion by means of a coilspring 86. This spring islsleeved on the lower section of the latch rod.The lower end portion of the rod extends-through a hole in the tablelatch against the underside of a collar .87, which is secured to'thelatch rod, thus normally holding the latch rod "n elevated position.

3 The latch rod is depressed to'release the cam shaft 53 and the clutch69 by means of a horizontally disposed foot lever 88. Themiddle portionof this lever is pivoted to the middle one of the standards 2 whichsupport the table 1. The forward end of the foot lever 88 is providedwith a foot pedal por- .the latch rod lifts the latch en sec-- and-theadjacent ends of the and p1n connection with one' the cam shaft 53andeter.

toggle link whose tions of rest, the operation of the machine is asfollows: The hot cup as it comes from the hardening furnace is placed inone of the cup holding and quenching devices 4: beneath a raisedexpanding plug 30. The operator then depresses the forward end ofthecotv lever 88, thus raising its rear end, which is connected to theinner end of the lever 89 y .means-of the link 90. This forces the innerann of the lever 89 upwardly and causes'its outer arm; which isconnected 'to the lower end of the latch rod,

0 swing downwardly and pull down the latch rod 81. This downwardmovement of 78 from out of engagement with the notch in the stop disk79,"thus unlockin the cam shaft 53. Further movement 0 the latch rodactuates the yoke lever 82, caus-- ing its bifurcated end portion toengage the weight 72 on'the lock rod 70," thus raising the same from itsposition in front of the camlug 74 of the clutch member 69. Thisunlocking of the clutch permits the spring pressed pins 7 5 to slide theclutch along the counter shaft 63 and force said clutch into engagementwith the constantly driven gear 62 on said counter shaft.

This gear 62 is driven from the drive shaft 58 at a reduced speed bymeans of the smaller drive gear 61, preferably at the ratio of 2 to l.he pinion gear 65 on the counter shaft drives the larger gear 66 on thecam shaft at a reduced speed, the ratio also being 2 to 1. The rotationof the cam shaft causes the cam 52 fixed to its forward end to engagethe cam rollers 57 of the yoke, thus sliding-the same in a horizontaldirection. This sliding of the yoke in either direction, by reason ofits connection. with the double toggle links, stra-ightensfone set andbreaks the other. This action causes the expanding plug 30 of thestraightened toggle link to move downwardly and engage the cup mountedon the holder located below, thus expanding the cup to the desired diam-This-downward movement of the ex panding plug also depresses the valverod 24, thus opening the valve 16 and permitting a stream of quenchingliqu1d to be directed against the exterior and interior surfaces of theengaged cup. Thus, whilethe parts are thus assembled, and preferablywhile the pressure on the inner plug is still maintained, they aresubmerged in the quenching liquid. During this action, the joint hasbeen broken,

d of the pawl,

, raises the other of the releasing the valve rod 24 operated therebyexpanding plugs, thus and cutting off theflow of quenching liquid to thequenching device in which said plug works. This upward movement of theexpanding plug causes the stripper sleeve 36 to strike the under side ofthe cross-arm of the frame, thus causing the cup to engage the lower-endof the stripper and be forced off the tapered end of said plug. Onaccount ofthe taper of the plug, the quenched cup can bestrippedtherefrom without injuring the inner surface thereof. The cup is thenremoved and the new cup is placed in position beneath the raised plugand the foot lever actuated and the hereinbefore described operation isrepeated.

B reason of' the arrangement of the camlug 74 and the lock rod 70, theclutch is disengaged from the constantly rotating gear 62 on the countershaft 63 after each complete revolution.- Thus, for each completerevolution of the counter shaft 63, the cam shaft 53, by reason of thereduction gears 65 and 66, is rotated one-half revolution. This permitsthe pawl 78 to engage a notch 80 of the locking disk 79, thus lockingthe cam shaft 5'3 after each 180 degree rotation and holding .the

its stroke. This locking of the cam shaft also looks the'counter shaftand holds the k lug 7 4 of the clutch 69 in position behind the weightedstop. rod 70. I

It is noted that the mechanical expansion of the wall ofthe cup has atendency to produce' true circularity. It is also noted that,

. whether the hot cup is mechanically expanded by the plug or not, thetendency of the cup to shrink 1n quenching causes said cup to conform tothe accurately finished surface of the plug and maintain the properconcentrfcity and taper of the inner or bean ingsurface of the cup.

he outer surface ,of the cup may be also restrained during the quenchingoperation if desired. 'In case it is desired to grind the .outer surfaceafter the cup has been hard ened, it is. preferable. to quench ,theinner surface before submerging the entire cup. The margin of theblockis fluted in a manner similar to the flutes 43 in the tapered ends ofthe. plugs 30' and the bottoms of the flutes have ports that open into ahollow chamber in the middle of the block, which ficiently small" to notmaterially chamber in turn communicates with a suitable source ofquenching liquid and means for'forcing' it through such ports at will.By'this arrangement, the inner surface of the cup is subjected to theaction of streams of quenching liquid throughout its entire surfaceexcept for the intervals between adjacent'flutes; and these intervalsare sufchange the concentricty of the surface. After this'initialhardening of the inner Surface,

tained throughout yoke 82 at the end of hardening furnace, is

the whole cup is submerged in quenching fluid as above described. p

In the case of cones, the outer surface is the bearing surface and isthe one that requires hardening. For the treatment of cones, it ispreferable to form the cone with a slightly tapered bore, must besubsequently reduced or eliminated to suit the requirements of thefinished cone. When the cone is ready for quenching, it is placed over aslightly tapered plug adapted to fit its bore. A die block with conicalribs of the proper taper to bear against the outer surface of the coneis then placed over the cone and maintained in contact therewith duringthe quenching operation. This die block has a number of ports openingradially in the flutes between ribs,

ing liquid. Means similar to that shown in the accompanying drawings maybe used for controlling the flow of quenching liquid. In operation, theheated cone is mounted on the tapered plug and the outer conical dieblock is placed over the cone and in contact therewith, and pressure(which may be only the weight of the heavy die block) is main thequenching operation. The source of liquid supply isthen manipulated sothat streams of quenching liquid are sprayed. on to .the outer surfaceof the cone except for the narrow spaces covered by the ribs of the die.block. hen the entire device is submerged in quenching liquid. Onaccount of the taper of the plug, the cone can be easily removedtherefrom, just as it is an easy matter to strip the quenching cup whichports communicate with a suitable source of supply of quencheven if thetaper from the tapered block on which it shrinks,

In some instances it maybe desirable to form the cups with taperedouter'surfaces as well as with tapered inner surfaces. In such ease, thehot cup, as it comes from the dropped into a tapered die block,preferably of the same tape-r as i the exterior surface of the cup ,andotherwise adapted for the cupto fit. A conical metal plug of the sametaper as that desired for the inner surface of the cup is then forcedaxially into said-cup, whereby the taper of the inner surfaces of thecups is maintained or becomes the same as the taper of the plug, and theinside diameter of-the cup will'be increased more or less according tothe distance the plug is forced through the rings. During the quenchingoperation. the outer surface of the cup is preferably restrained by itsfitting in the taper of the die block, this fit being itself maintainedby the tendency of the cup and plug to slip downward in the die block(under pressure or even by their own weight) and thus automaticallycompensate the metal incident to quenching. By the arrangementdescribed, the outer .surface 0 the cup conforms to the taper of the dieforany shrinkage of tapered bore conforming to the for a ring and cup,and means for block and takes the diametepthereof; but it is obviousthat the die block may be dispensed with and the tapered plug used aloneto give the inner surfa-ce of the cup the desired taper and size.

What I claim is:

l. A device for quenching metal rings, said device comprising a.stationary holder a movable plug adapted to enter the bore thereof andenlarge the saine to size, said holder and said movable plug havingports communicating with a source of quenching liquid, and meansactuated by said plug for controlling the flow of the liquid to saidholder and said plug during the engagement of said plug with the ring,whereby said plug actuates said controlling means and permits thequenching liquid to be directed against the exterior and interiorsurfaces of'the ring through the ports of the respective holder. andplug.

2. A device for use in sizing and quenching conical cups which consistsof a tapered plug, means forproducing relative movement of said plugaxially with respect to the cup under treatment, said plug having .aportion of its outer surface of the size and taper desired for the innersurface of said the plug into contact with the inner wall of said cupand keeping them in contact dur ing the quenching operation.

3. A device for use in sizing and quenching cups for conical rollerbearings comprising a support for an unfinished cup, a tapered plugmovable axially with relation to said cup, and means for limiting themovement of said plug, saidplug having a portion in contact with theinner wall of said cup whenthe plug is at the end of its effectivestroke and said portionbeing of approximately The size and taper desiredfor said cup. i 4. A device for use in quenching hollow conical bearingparts consisting of a tapered inner member and an outer member with ainner and outer peripheral surfacesrespectively ofthe bearing part to"be produced and means for pressing said members towards each other to apredetermined extent for sizing the bearing part between them and formaintainin therelation of such members during the quenching operation.

5. A device for use in quenching cups for conical roller bearingsconsisting of a conical taper die block adapted to fit the outer surfaceof the cup and a tapered block adapted to fit the inner surface of thecup,"a-nd means for pressing one of. said members axially relatively tothe other and means for predetermining the relative movement of .saidmembers so as to size a cup between them. 7

6. A device for use in sizing and-quenchbringing said portion of ingcups for conical roller bearings comprising an outer member having aconical socket of approximately the size and taper desired for the outersurface of the cup and an inner member concentric with said outer memberand relatively axially movable with relation thereto, said inner memberhaving the portion of its outer surface that is in contact with the cupat the end of its efi'ective stroke of approximately the size and taperrequired for the inner surface of said cup.

use in quenching cups for conical roller bearings consisting of aconical taper die block adapted to fit the outer surface of the cup, anda tapered .block havinglongitudinally disposed ribs adapted to fittheinner surface of the cup and inclined with relation to axial planespassing through them respectively. 1

device for use in quenching cups for conical roller bearings consistingof a conical taper die block adapted to fit the outer surface of thecup, and a tapered block having ribs adapted to fit the inner surface ofsaid cup and having portsin the spaces between ribs communicating with asource of quenching liquid.

. device for use in quenching cups for roller bearings consisting of aconical taper die block adapted to fit the outer surface of the cup, anda ta ered block hav ing ribs adapted to fit the inner surface of saidcup and having ports in the spaces between ribs communicating with asource of 1 quenching liquid, and means for submerging said device inquenching liquid.

10. A device for sizing and quenching metal rings and the like, saiddevice comprising a holder for a ring having ports communicating with asource of quenching liquid, the flow of of quenchln liquid to saidholder when gal p ug completes the expansion of said ore.

means arranged to be actuated by said plug ile in engagement with thering for permitting the flow'of liquid to the ports of said holder and.said plugs, whereby the quenching liquid is directed against the intenorand exterior surfaces of the ring. 12. A device for quenching hollowmetal articles, said device comprising a support for an article and apower actuated plug adapted to enlarge the bore of such article,

35 cally operated plug adapted to enter the .bore thereof and enlargethe same to size plug.

such enlargement of the bore and the flow of liquid is stopped when saidplug 1s withdrawn from engagement with said article.

13. A device for quenching metal rings, said device comprising a holderfor a ring, a movable plug adapted to enter and size the ring, saidholder and said plug having ports communicating with .a' source ofquenching liquid, and means operated by said plug for controlling theflow of the quenching liquid to said holder and said '14. A device forquenching metal rings, saiddevice comprising a stationary holder foraring and a movable plug adapted to enter the bore thereof and enlargethe same to size, said holder and said movable plug having portscommunicating with a source of quenching liquid, and means actuated bysaid plug for cont-rolling the flow of the liquid to said holder andsaid plug during the engagement of said plug with the ring, whereby saidplug actuates said controlling means and permits the quenching liquid tobe directed against the exterior and in- 'terior surfaces of the, ringthrough the ports of the respective holder and plug and, when said plugis out of engagement with said ring, the flow of liquid to said holderand said plug is stopped.

' 15. A device forquenching metal rings comprising a holder for a ringand a vertithe ring, said holder and said plug having ports formedtherein adapted to communicate with a supply of quenching liquid, andcontrol means for normally stopping the flow of quenching liquid to theports of said holder and saidplug, said control means being adapted tobe actuated by said plug when in engagement'with the ring to per-,

mit the quenching liquid to flow through the ports of said holder andsaid plug and be directed against'the exterior and interior surfaces-ofthe ring.

16. Adevice for quenching'metalarticles comprising a pair of supportsfor an article and a pair of movably mounted members adapted to engagesaid articles in one posi- -tion of their movement, and sprayingdevices-for directing quenching liquid against the articles on each ofsaid supports, said spraying devices communicating with a source ofquenching liquid, and normally closed means for controlling the flow ofthe quenching liquid from said supply source to sald spraying devices,said means being actuated by said movable members when said members arein engagement with the article to permit the flow of liquid to saidspraying dev1ces.

v alternately raised adapted to receive a ring and a pair of verticallymovable plugs adapted to fit within rings, said holders and said plugshaving ports adapted to communicate with a source of quenching liquid,,and normally closed control means-for controlling the flow of theliquid to each of said said plugs, said plugs being adapted to be andlowered and 'each being adapted to actuate the control means when inengagement with a ring to permit the flow of liquid -'to saidholders andsaid plugs, whereby liquid is directed against the exterior. andinterior surfaces of said rings. 18. A device for quenching metal ringsand the like comprising a pair of holders adaptedto receive a ring and apair of vertically movable plugs adapted to fit within rings, saidholders and said plugs having ports adapted. to communicate with asource holders and each of from said plugs during the 19. A device forquenching metal rings and the like comprising a pair of holders adaptedto receive a ring and a pair of vertically movable plugs adapted to fitwithin rings, said holders and said plugs having ports adapted tocommunicate with a source of quenching liquid, and normallyclosedcontrol means for controlling the flow of the liquid to each of saidholders and each of said plugs, said plugs being adapted to bealternately raised and lowered and each being adapted to *actuate thecontrol means when in engagement liquid to said holders and said plugs,whereby liquid is directed against the exterior and interior surfaces ofsaid rings, means for with a ring to permit the flow of to saidquenching control means for controlling thefiow of liquid to saidquenching device, said control means'being adapted to be actuated bysaid plunger when said plunger is in engagement With the article topermit the flow of liquid device.

21. A machine for sizing and quenching metal'rings and the likecomprising a table, a quenching device mounted on said table andcommunicating with a source of quenching liquid, a vertically movableplunger adapted tobe forced axially into a ring, a

toggle operatively connected to said plunger or raising and lowering thesame, a yoke operatively connected to said, toggle for actuating thesame, a cam for actuating said yoke, means for rotating said cam, and"means for automatically locking said cam when the plungeris in raisedand lowered positions. respectively.

22. A machine for sizing and quenching metal rings and the likecomprising a table,

- a quenching device mounted on said table 25 and communicating with asource of quenching liquid a normally closed control device lling theflow of the liquid to said quenching device, a vertically movableplunger adapted to be forced axially into a ring, said plunger beingadapted to actuate the control device when in engagement with said ringto permit the flow of liquid to said quenching device, a toggleoperatively connected'to said plunger for raising and lowering the same,a slidably' mounted yoke opera'tively connected to said toggle foractuating the same to raise and lower said plunger, a rotatable cam foractuating said toggle, continuously operating drive gearing, a clutchdevice for operatively connecting said rqtatable cam with said drivegearmeans for automatically disengaging clutch from said drive gearingwhen the plug is in its uppermost and lowermost positions respectively,and means for automaticallylocking said cam'and said clutch when theplunger is in eitherits raised or its lowered position.

23. A machine for sizing and quenching metal rings and the likecomprising a table, -a pair of quenching devices mounted on said tableand communicating with a source of quenching liquid, a normallyclosed'control device for controlling the flow of the quenching liquidto each of said quenching devices, vertically operating plugs locatedabove each of said quenching devices and adapted to be forced axiallyinto the ring on the respective quenching devices, said plugs beingadapted to actuate the control device of the respective holders when inengagement with the rings to permit the flow of liquid thereto, deviceson said plugs for automatically stripping the rings therefrom, a' doubletoggle operatively connected to each of said plugs for, simultaneouslyraising one and ing, said lowering the other, a slidably mounted yokeoperatively connected to said double toggle foractuating the same, arotatable cam for actuating said yoke, continuously rotating drivegearing for rotating said cam, a normally disengaged clutch member forconnecting said drive gearing to said cam, and means for automaticallydiengaging the clutch means from the drive gearing when the plugs reachtheir uppermost and lowermost positions, and means for automaticallylocking said camand said clutch to hold the plungers in said positionsrespectively.

Signed at Canton, Ohio this 18th day of March, 1920.

MARCUS 'll. LOTHROP.

